Given the limitations of equivalent pulses in investigating the effects of pulse-like ground motions, the present study is mainly aimed at providing an approach to capture the maximum response characteristics of steel moment resisting frames using the simulated pulses. Accordingly, the behavior of three moment resisting frames of 3, 9, and 20-story buildings from the SAC project prior to the Northridge earthquake in the Seattle are investigated under pulse-like ground motions. Twenty-six pulse-like records from Imperial Valley and Northridge earthquakes in 1979 and 1994 are selected from the Next Generation Attenuation (NGA) Project database. The pulse-like records are developed in selected seismic regions by combining of high frequency content of records and artificial pulses. The inter-story drift, critical story, and base shear are evaluated as structural demand parameters using over 54000 nonlinear time history analyses. Then response contours are provided to determine the critical story, the largest normalized base shear, and estimate the structural damage. The results indicate the contribution of high frequency content to the response. The response contours are often conservative or offer acceptable estimates of the largest maximum inter-story drift and the largest normalized base shear.

鉴于等效脉冲在研究类脉冲地面运动影响方面的局限性，本研究的主要目的是提供一种使用模拟脉冲捕获钢抗弯框架最大响应特性的方法。因此，西雅图北岭地震前 SAC 项目的 3、9 和 20 层建筑物的三个抗弯框架的行为在脉冲状地面运动下进行了研究。从下一代衰减 (NGA) 项目数据库中选择了 1979 年和 1994 年帝王谷和北岭地震的 26 条脉冲状记录。通过将记录的高频内容和人工脉冲相结合，在选定的地震区域开发了类脉冲记录。故事间的漂移，批判的故事，使用超过 54000 个非线性时间历程分析，将基剪力和基础剪切力作为结构需求参数进行评估。然后提供响应等值线以确定临界层、最大归一化基础剪切，并估计结构损坏。结果表明高频内容对响应的贡献。响应等值线通常是保守的或提供可接受的最大最大层间漂移和最大归一化基础剪切的估计。